A particle mixing injection valve assembly

Abstract

This invention discloses a particle mixing injection valve assembly, relating to the field of liquid injection valve technology. It includes: a nozzle, the lower end of which is connected to a water source; a nozzle plate disposed inside the nozzle; nozzles evenly distributed circumferentially on the nozzle plate; a transmission hole at the axial center of the nozzle plate; a self-closing valve disposed inside the nozzle pipe at the lower part of the nozzle plate; and first openings evenly distributed circumferentially on the sidewall of the nozzle pipe at the upper part of the nozzle plate; a sleeve located outside the nozzle; a transmission rod fixed at the axial center of the top of the sleeve; the lower end of the transmission rod passing through the transmission hole and contacting the top of the valve core of the self-closing valve; and second openings on the sidewall of the sleeve corresponding one-to-one with the first openings; and a filter funnel, the inner bottom of which is flush with or below the second openings. This invention integrates particle mixing, circulation, and on / off switching functions, is simple to operate, and has a compact structure.

Description

Technical Field

[0001] This invention relates to the field of liquid injection valve technology, and in particular to an injection valve assembly for circulating and mixing particles during liquid injection. Background Technology

[0002] Incorporating particles into a liquid jet can enhance the scouring effect of the liquid, with industrial applications including high-pressure waterjet cutting and low-pressure cleaning of dirt from the inner walls of workpieces. The particles incorporated into the jet are in a continuous cycle; the shorter the circulation path of the particles, the higher the utilization rate, the less quantity is needed, and the smaller the storage space occupied by the particles.

[0003] When cleaning the workpiece, particles remain on its inner wall, requiring further rinsing to remove them. This process necessitates first cutting off the jet containing the mixed particles and liquid, then switching to a particle-free jet for rinsing, or transferring the workpiece to a separate cleaning tank for immersion. However, transferring the workpiece for cleaning consumes particles, necessitating continuous replenishment to maintain stable circulation density. Therefore, a jet valve device integrating particle mixing, circulation, and on / off switching functions is designed to improve jet switching efficiency and prevent particle consumption. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a particle mixing injection valve assembly that integrates particle mixing, circulation, and on / off switching functions, and is simple to operate and has a compact structure.

[0005] The technical solution adopted in this invention is: a particle mixing injection valve assembly comprising: The nozzle has a lower end connected to a water source; a nozzle plate is installed inside the nozzle; nozzles are evenly distributed on the nozzle plate in the circumferential direction; a transmission hole is provided at the axis of the nozzle plate; a self-closing valve is installed inside the nozzle in the lower part of the nozzle plate; and a first opening is evenly provided on the side wall of the nozzle in the circumferential direction in the upper part of the nozzle plate. A sleeve is located outside the nozzle and is axially slidingly fitted and radially rotatingly fitted with the nozzle. A transmission rod is fixed at the axial center of the top of the sleeve. The lower end of the transmission rod passes through a transmission hole and contacts the top of the valve core of the self-closing valve. When the sleeve slides downward along the nozzle, it drives the transmission rod to press down the valve core of the self-closing valve, causing the self-closing valve to open. The side wall of the sleeve is provided with a second opening that corresponds one-to-one with the first opening. A first limiting point is provided for the forward rotation of the sleeve around the nozzle, under which the first opening and the second opening are connected one-to-one. A second limiting point is provided for the reverse rotation of the sleeve around the nozzle, under which the first opening and the second opening are staggered and isolated. A filter funnel is coaxially fixed to the outside of the sleeve; the inner bottom of the filter funnel is flush with or below the second opening.

[0006] To further optimize this technical solution, a scattering rotor is rotatably connected to the upper end of the transmission rod; the scattering rotor is driven to rotate by the jet from the nozzle.

[0007] To further optimize this technical solution, the nozzle plate and the side wall of the nozzle pipe are rotatably connected by a bearing; the jet direction of the nozzle is inclined relative to the axial direction of the nozzle pipe so as to drive the nozzle plate to rotate by the reaction force of the jet.

[0008] To further optimize this technical solution, the upper surface of the nozzle plate is uniformly provided with turbulence-inducing ribs in the circumferential direction; the turbulence-inducing ribs are evenly and alternately distributed with the nozzle.

[0009] To further optimize this technical solution, a particle mixing injection valve assembly also includes an outer shell; the filter funnel is located inside the outer shell and slides in fit with the inner wall of the outer shell; the bottom of the outer shell is fixedly connected to the spray pipe; and a drain outlet is provided at the bottom of the side wall of the outer shell.

[0010] To further optimize this technical solution, the inner side of the filter funnel is provided with at least one upwardly protruding anti-slip rubber strip in the radial direction.

[0011] In this invention, a filter funnel contains particles, and a workpiece to be cleaned is placed upside down on the filter funnel with its opening facing downwards. Rotating the workpiece causes the filter funnel and sleeve to rotate. When the nozzle and sleeve rotate relative to each other to the first limit point, the first opening and the second opening are connected. Pressing down on the workpiece causes the filter funnel, sleeve, and transmission rod to move downwards. The transmission rod opens the self-closing valve, and the jet sprayed from the nozzle impacts the inner wall of the workpiece and flows back to the filter funnel. The liquid is discharged downwards from the filter funnel, while the particles contained in the filter funnel are pushed by the backflowing liquid, passing through the second opening and the first opening in sequence to reach the nozzle and mix with the jet to form a cycle.

[0012] After the dirt on the inner wall of the workpiece is cleaned, rotate the workpiece so that the nozzle and sleeve rotate relative to each other to the second limit point. At this point, the first and second openings are staggered and isolated, and particles will no longer mix into the jet. Under the flushing of the pure liquid jet, the particles remaining on the inner wall of the workpiece are impacted and fall back into the filter funnel. Then, move the workpiece upwards, and the self-closing valve elastically resets, closing the water circuit.

[0013] The entire process described above only requires pressing down, rotating and reverse rotating, and moving the workpiece upwards to complete the functions of water channel opening, particle mixing jet cleaning, cutting off particle mixing to remove particle residue, and closing the water channel. It has a high degree of integration, is simple to operate, does not require secondary transfer, has a short particle circulation path, and does not consume particles.

[0014] Other technical effects of the present invention will gradually become clear as the embodiments are described. Attached Figure Description

[0015] Figure 1 This is a perspective structural diagram of the present invention; Figure 2 This is a cross-sectional view of the self-closing valve of the present invention in the closed state; Figure 3 This is a cross-sectional view of the self-closing valve of the present invention in the open state; Figure 4 This is an exploded view of the nozzle section of the present invention; Figure 5 This is a schematic diagram of the casing and filter funnel.

[0016] In the diagram, 1. Nozzle; 1-2. Nozzle plate; 1-3. Nozzle; 1-4. Transmission hole; 1-5. First opening; 1-6. Turbulence rib; 1-7. Bracket; 1-8. Limiting pair; 2. Self-closing valve; 2-1. Valve core; 2-2. Sealing ring; 2-3. Spring; 3. Sleeve; 3-1. Transmission rod; 3-2. Second opening; 4. Filter funnel; 4-1. Anti-slip rubber strip; 4-2. Anti-slip rubber strip mounting groove; 5. Workpiece; 6. Scattering rotor; 7. Bearing; 8. Outer shell; 8-1. Drain outlet; 8-2. Threaded joint. Detailed Implementation

[0017] The following is in conjunction with the appendix Figure 1-5 The present invention will be further described in detail below with reference to specific embodiments.

[0018] A particulate mixing injection valve assembly includes: The nozzle 1 is connected to a water source at its lower part; a nozzle plate 1-2 is provided inside the nozzle 1; nozzles 1-3 are evenly distributed in the circumferential direction on the nozzle plate 1-2; a transmission hole 1-4 is provided at the axis of the nozzle plate 1-2; a self-closing valve 2 is provided inside the nozzle 1 at the lower part of the nozzle plate 1-2; and a first opening 1-5 is evenly provided in the circumferential direction on the side wall of the nozzle 1 at the upper part of the nozzle plate 1-2. The sleeve 3 is located outside the nozzle 1 and is axially slidingly fitted and radially rotating fitted with the nozzle 1. A transmission rod 3-1 is fixed at the axial center of the top of the sleeve 3. The lower end of the transmission rod 3-1 passes through the transmission hole 1-4 and contacts the top of the valve core 2-1 of the self-closing valve 2. When the sleeve 3 slides down along the nozzle 1, it drives the transmission rod 3-1 to press down the valve core 2-1 of the self-closing valve 2, so that the self-closing valve 2 opens. The side wall of the sleeve 3 is provided with a second opening 3-2 corresponding to the first opening 1-5. The sleeve 3 is provided with a first limiting point for rotating around the nozzle 1 in the forward direction. Under this limiting point, the first opening 1-5 and the second opening 3-2 are connected in a one-to-one correspondence. The sleeve 3 is provided with a second limiting point for rotating around the nozzle 1 in the reverse direction. Under this limiting point, the first opening 1-5 and the second opening 3-2 are staggered and isolated. The filter funnel 4 is coaxially fixed to the outside of the sleeve 3; the inner bottom of the filter funnel 4 is flush with or below the second opening 3-2.

[0019] like Figure 1 As shown, the workpiece 5 to be cleaned is placed upside down on the filter funnel 4 with its opening facing downwards. Figure 2 As shown, under the action of liquid pressure and spring 2-3, the valve core 2-1 of the self-closing valve 2 pushes upward against the sealing ring 2-2. When the valve core 2-1 does not bear additional pressure from the workpiece 5, the self-closing valve 2 is in a sealed state, and the nozzle 1-3 does not spray water.

[0020] like Figure 3 As shown, downward pressure is applied to workpiece 5, causing filter funnel 4 and sleeve 3 to move downwards. Transmission rod 3-1 presses down on valve core 2-1, overcoming liquid pressure and the elastic force of spring 2-3, opening self-closing valve 2. Water then sprays out from nozzle 1-3.

[0021] like Figure 2 , Figure 5 As shown, in this embodiment, the transmission rod 3-1 and the sleeve 3 are connected by a bracket 1-7 located at the top of the sleeve 3, and the bracket 1-7 and the opening of the nozzle 1 are staggered to form a limiting pair 1-8 for relative rotation between the sleeve 3 and the nozzle 1. Besides this structure, the limiting pair 1-8 between the sleeve 3 and the nozzle 1 can also be implemented by other structures, such as limiting the relative rotation angle between the transmission rod 3-1 and the transmission hole 1-4, or by providing protrusions and circumferential grooves on the sidewalls of both the sleeve 3 and the nozzle 1.

[0022] Rotating the workpiece 5 causes the filter funnel 4 and sleeve 3 to rotate to the first limiting point, where the first opening 1-5 and the second opening 3-2 are connected one-to-one. At this time, the particles in the filter funnel 4 can be mixed into the jet by passing through the second opening 3-2 and the first opening 1-5 under the disturbance of the water flow. The water that has impacted the workpiece 5 and flowed back into the filter funnel 4 is discharged from the filter funnel 4, while the mixed particles move towards the bottom along the inner side of the filter funnel 4, forming a circulation.

[0023] The workpiece 5 is rotated in the opposite direction, which drives the filter funnel 4 and the sleeve 3 to rotate to the second limit point. The first opening 1-5 and the second opening 3-2 are staggered and isolated, so the particles cannot enter the nozzle 1-3 for mixing. The jet without particles washes the inner wall of the workpiece 5 and washes the particles into the filter funnel 4.

[0024] like Figure 5As shown, a filter funnel 4 is used instead of a planar filter screen structure. This allows particles to converge along the inner surface of the sleeve 3 towards the second opening 3-2 under the impact of water flow, enabling rapid circulation. More importantly, when the workpiece 5 moves upwards from the filter funnel 4, the particles that converge towards the lower center will not adhere to the lower edge of the workpiece 5. The workpiece 5 in this invention can be a barrel-shaped machined part requiring degreasing in industrial processing, or a water cup or similar container used in daily life. The particles used in this invention can be selected based on the material and particle size of the workpiece 5 to be cleaned. For example, for metal workpieces 5, garnet sand or nylon sand can be used for cleaning and polishing; for plastic workpieces 5, silicone particles or PET particles can be used to prevent surface scratches.

[0025] The water source in this invention can be an external tap water source or an internal high-pressure water source consisting of a water pump and a water storage tank. The water source can be a water source mixed with a cleaning solvent, deionized water, ordinary water, or organic solvent.

[0026] In a further optimization of this embodiment, a scattering rotor 6 is rotatably connected to the upper end of the transmission rod 3-1; the scattering rotor 6 is driven to rotate by the jet from the nozzle 1-3, so that when the jet interferes with the scattering rotor 6, it scatters in all directions.

[0027] Since the workpiece 5 is inverted on the filter funnel 4, when the second opening 3-2 and the first opening 1-5 are staggered and isolated, in order to intercept particles and prevent them from entering the nozzle 1 from the top, when the diameter of the workpiece 5 is small, a portion of the height of the nozzle 1 and the sleeve 3 will overlap with the lower sidewall of the workpiece 5. This means that the lower sidewall of the workpiece 5 cannot be directly impacted by the jet from the nozzle 1-3, and cleaning can only be achieved through the friction between the backflow of particles and the sidewall, which is less efficient than direct impact. Figure 4 As shown, the scattering rotor 6 is structured as a fan-blade paddle. When the jet impacts the scattering rotor 6, it is redirected and scattered, expanding the impact range of the jet and improving the uniformity of cleaning. The fan blades of the scattering rotor 6 can be made of flexible material. When the jet impacts the fan blades, the blades deform and vibrate. During rotation, when they collide with the jets from different nozzles 1-3, the deformation and vibration increase the redirection distance and randomness of the jet, improving the uniformity of rinsing different parts of the inner wall of the workpiece 5.

[0028] In a further optimization of this embodiment, the nozzle plate 1-2 is rotatably connected to the side wall of the nozzle pipe 1 via a bearing 7; the jet direction of the nozzle 1-3 is inclined relative to the axial direction of the nozzle pipe 1 so as to drive the nozzle plate 1-2 to rotate by the reaction force of the jet.

[0029] In this invention, the nozzle plate 1-2 and the nozzle 1 can be an integral structure or a separate structure, and can be fixedly connected or rotatably connected. In this embodiment, the nozzle plate 1-2 is rotatably connected to the inner wall of the nozzle 1 via a bearing 7. The reaction force of the inclined jet drives the nozzle plate 1-2 to rotate, which can further improve the coverage and uniformity of the jet impact. When combined with the scattering rotor 6, the rotation of the nozzle plate 1-2 superimposed on the rotation of the scattering rotor 6 causes the encounter position between the jet and the scattering rotor 6 to change continuously, further enhancing the randomness of the jet direction and scattering.

[0030] In a further optimization of this embodiment, the upper surface of the nozzle plate 1-2 is uniformly provided with turbulence-inducing ribs 1-6 in the circumferential direction; the turbulence-inducing ribs 1-6 are evenly and alternately distributed with the nozzle 1-3.

[0031] The function of the turbulence ribs 1-6 is to agitate the particle flow about to enter the nozzle plate 1-2 during rotation, thereby improving the uniformity of the particle flow obtained by each nozzle 1-3. It also prevents particles from accumulating and clogging the first opening 1-5 and the second opening 3-2.

[0032] To further optimize this embodiment, a particle mixing injection valve assembly also includes an outer shell 8; the filter funnel 4 is located inside the outer shell 8 and slides in fit with the inner wall of the outer shell 8; the bottom of the outer shell 8 is fixedly connected to the nozzle 1; and a drain outlet 8-1 is provided at the bottom of the side wall of the outer shell 8.

[0033] The outer casing 8 collects and guides the water flowing out of the filter funnel 4. It also provides support and protection for the filter funnel 4 and the nozzle 1. In this embodiment, the lower part of the nozzle 1 is threadedly connected to the outer casing 8, and the self-closing valve 2 is encapsulated between the two. A threaded connector 8-2 for connecting to the water source is provided at the bottom of the outer casing 8.

[0034] To further optimize this embodiment, at least one upwardly protruding anti-slip strip 4-1 is provided on the inner side of the filter funnel 4 in the radial direction.

[0035] The function of the anti-slip rubber strip 4-1 is to increase the friction between the workpiece 5 and the filter funnel 4, so that the filter funnel 4 can be rotated when the workpiece 5 is rotated.

[0036] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0037] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

Claims

1. A particle mixing injection valve assembly, characterized in that: include The nozzle has a lower end connected to a water source; a nozzle plate is installed inside the nozzle; nozzles are evenly distributed on the nozzle plate in the circumferential direction; a transmission hole is provided at the axis of the nozzle plate; a self-closing valve is installed inside the nozzle in the lower part of the nozzle plate; and a first opening is evenly provided on the side wall of the nozzle in the circumferential direction in the upper part of the nozzle plate. A sleeve is located outside the nozzle and is axially slidingly fitted and radially rotatingly fitted with the nozzle. A transmission rod is fixed at the axial center of the top of the sleeve. The lower end of the transmission rod passes through a transmission hole and contacts the top of the valve core of the self-closing valve. When the sleeve slides downward along the nozzle, it drives the transmission rod to press down the valve core of the self-closing valve, causing the self-closing valve to open. The side wall of the sleeve is provided with a second opening that corresponds one-to-one with the first opening. A first limiting point is provided for the forward rotation of the sleeve around the nozzle, under which the first opening and the second opening are connected one-to-one. A second limiting point is provided for the reverse rotation of the sleeve around the nozzle, under which the first opening and the second opening are staggered and isolated. A filter funnel is coaxially fixed to the outside of the sleeve; the inner bottom of the filter funnel is flush with or below the second opening. The upper end of the transmission rod is rotatably connected to a scattering rotor; the scattering rotor is driven to rotate by the jet from the nozzle. The nozzle plate is rotatably connected to the side wall of the nozzle pipe via a bearing; the jet direction of the nozzle is inclined relative to the axial direction of the nozzle pipe so as to drive the nozzle plate to rotate by the reaction force of the jet.

2. The particulate mixing injection valve assembly according to claim 1, characterized in that: The nozzle plate has turbulence ribs evenly distributed on its upper surface in the circumferential direction; the turbulence ribs are evenly and alternately distributed with the nozzle.

3. The particulate mixing injection valve assembly according to claim 1, characterized in that: It also includes an outer shell; the filter funnel is located inside the outer shell and slides in fit with the inner wall of the outer shell; the bottom of the outer shell is fixedly connected to the nozzle; and a drain outlet is provided at the bottom of the side wall of the outer shell.

4. The particulate mixing injection valve assembly according to claim 1, characterized in that: The inner surface of the filter funnel is provided with at least one upwardly protruding anti-slip strip in the radial direction.

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